| Term | Definition |
| What are the three routine projections for the Wrist series? | PA projection
Lateral projection
PA Oblique projection |
| PA projection
Collimation?
patient positioning?
IR placement?
Central Ray?
Shield | 8x10
Seated at the end of the table, flexing the elbow 90 degrees
Center IR to the point of flexion of wrist
Perpendicular to the midcarpal area
Shield is required |
| Lateral Projection
Collimation?
Patient position?
IR placement?
Central Ray?
Shield? | 8x10
Seated at the end of the table, flexing the elbow 90 degrees and placing wrist in lateral position
Center IR to wrist, forearm and hand in the lateral position
Perpendicular to the wrist joint
Shield is required |
| PA Oblique
Collimation?
Patient position?
IR placement?
Central Ray?
Shield? | 8x10
Seated at the end of the table, flexing the elbow 90 degrees
Center IR to wrist, and rotate wrist laterally 45 degrees
Perpendicular to the midcarpal area
Shield is required |
| What are the two routine projections for the Scaphoid series? | PA projection
PA Axial projection |
| PA projection
Collimation?
patient positioning?
IR placement?
Central Ray?
Shield | 8x10
Seated at the end of the table, flexing the elbow 90 degrees
Center the wrist on the IR and turn the hand outward in extreme ulnar deviation
Perpendicular to scaphoid (CR 10-15 degrees angled)
Shield is required |
| PA Axial projection
Collimation?
patient positioning?
IR placement?
Central Ray?
Shield | 8x10
Seated at the end of the table with arm and axilla in contact with table
Place IR on a 20 degree angle sponge and center wrist on IR.
Perpendicular directed to enter the scaphoid
Shield required |
| Flexing the fingers for the PA projection of the wrist does what two things? | Decreases OID
Increases recorded detail |
| For the lateral projection of the wrist, how should the elbow be positioned? | Flexed 90 degrees |
| For the lateral projection of the wrist, which surface of the wrist should be in contact with the IR? | Medial |
| How much should the wrist be rotated for the PA oblique projection? | 45 degrees |
| In a lateral wrist projection what other bones in addition to the metacarpals and the carpals should be superimposed for this projection ? | Radius and Ulna |
| For the PA oblique projection when the scaphoid is of primary interest the scaphoid can sometimes be better demonstrated if he patient deviates the hand and wrist toward the _______. | Ulna |
| Which bone is of primary interest of the PA wrist in ulnar deviation? | Scaphoid |
| To delineate a fracture line better with a PA projection of the wrist in ulnar deviation, how many degrees and in which direction may the central ray be directed? | 10 to 15 degrees proximally or distally |
| Which carpal bone is the primary interest when using the "Stretcher" method? | Scaphoid |
| How far from horizontal should the IR be inclined toward the elbow for the "Stretcher" method? | 20 degrees |
| When using a wedge to elevate the IR how should the central ray be directed toward the wrist? | Perpendicularly |
| If no wedge is used to angle the IR, how should the central ray be directed toward the wrist? | At a 20 degree angle toward the elbow |
